Rotary valve for internal-combustion engines.



' F. 'A'. TRUESDELL. ROTARY VALVE FOR INTERNAL COMBUSTION ENGINES.

APPLICATIO? FILED JULY I2. 1915. 1,17 5,202.

2 SHEETS-SHEET I Patented Mar. 14, 1916 F. A. TRUESDELL. ROTARY VALVE FOR INTERNAL COMBUSTION ENGINES APPLICATION FILED JULY 12. 1915. 1 ,175,202 Patented Mar. 14,1916.

' 2 SHEETSSHEET 2.

lllll I UNITED STATES PATE rains.

ROTARY VALVE FOR INTERNAL-COMBUSTION ENGINES.-

Specification of Letters Patent.

Patented Mar. re, 1916.

Application filed July 12, 1915. Serial No. 39,349.

To all whom it may concern:

Be it known that l, FRED ADRIAN Tamas- DELL, residing in Youngstown, in the county of Mahoningand the State of Ohio, have made new and useful improvements on my own invention of Rotary Valves for InternalC-ombustion Engines, of which the fol lowing is a specification, reference being had to the accompanying drawings. i This invention relates to an improved method of applying, oiling, and adapting said rotary valves to an internal combustion motor, of one or more cylinders.

Another and more specific object of the improvement resides in the provision of a means of removing the valves for inspection without disturbing the timing gears rotating said valves, also the provision of an au tomatic wear compensating gear or spring, for automatically taking up the wear that may occur between the valve and its seat.

The improved invention has for still another object in providing a floating valve or valve stem, working in conjunction with a loose key. An automatic wear compensating spring and a valve driving gear set in ball bearings to eliminate side thrust on the valve stem, necessarily due to the operation of the driving gears.

\Vith the above objects in view the improved invention consists in certain construction, combination and arrangements of the parts which I shall hereinafter fully describe and claim.

For fully understanding the improved invention, reference is to be had to the following and accompanying drawings in which,

Figure 1, is a vertical section through the end of one of a pair of detachable cylinder heads showing the old arrangement of valves and gear driving mechanism. -Fig. 2, is the intake side of a set of my new improved cast en bloc detachable cylinder heads showing connections for intake and water manifolds, also, oil guards around valve driving mecha nism with one of the guard covers removed. Fig. 3, is a vertical section in part taken at line A of Fig. 2 across'the end of a set-of cast en bloc cylinder heads showing the arrangement of driving gear oiling system and floating rotary valve in conjunction.

with the automatic wear compensating spring.

Referring shown, Fig. through the in detail to the drawings as end of a pair of ordinary de- 1, is a vertical section taken tachable cylinder heads showing the old arrangement of a valve therein.

Fig. 2, is my improved cylinder head conwhich operates shaft 13 through the medium of chain 20 operating over suitable gears carried by crank shaft 6 and gear shaft 13. 28 which is part of the main casting 4, designates the oil guards, one of which incloses each valve stem and its operating mechanism. 29. designates the caps which hold shaft 13 in its bearings. 30,"the cap screws which secure caps 29.

As shown in Fig. 3, each cylinder is provided with a valve plate or disk 8, the stem of which is 10 and runs through opening 11, in the cylinder head and through gear 12, which is firmly held to its proper place on ball bearings 32, which operate,

against ball cup 31, and hollow cone 33, which screws through cast arm 34, which is part of the main casting l, and the oil guard 28. Cone 83 being fitted with slots or notches 85 on its outer surface into which fits set screw 36 which is arranged in the outer end of arm 34, the object of the set screw is to lock the cone 38 after it has been properly adjusted.

Valve stem 10 and gear 12 are fitted with key ways 37 and 38 into which slips loose key 39, on top of which rest heavy spring 40, which is heldin place by a special nut 41, secured on the upper end of valve 10, therefore makin automatic wear that may occur between the valve plate 8, and its seat 7, will be readily and automatically taken care of by spring 40, which rests on top of gear 12 and pushes against special nut 41, on valve stem 10, therefore .pulling the valve plate 8 tightly against its seat 7.

4:2, designates a force feed oil pipe coming from any suitable force .feed oiler, not shown. Pipe 42 is fastened to oil nozzle e4. by means of nut 43. curely fastened to arm 45 which is held to cast arm 3d by means of cap screw 46, therefore arm 45 keeps nozzle 44: from turning with valve stem 10, nozzle 44 delivers oil a floating valve with an mpensator, and any xwear Nozzle 44 being seinto central bore 23, leading to absorbent material 25, fastened in the face of the valve plate 8, the surplus lubricant not used by absorbent material escapes through bore 26, inthe valve stem 10, into oil guard 28, thoroughly lubricating gears 12 and 14, and the surplus in the oil guard '28 is allowed to drain back to the source of supply,

not shown, through drain pipe 47 which is substantially placed at sufficient height to insure good lubrication. to the valve oper ating mechanism. 459, designates a detachable cover to protect the gears and keep the lubricant from being wasted.

50, designates a clamp bar and bolt, partly shown. 51 a thumb nut on 50. The object of 50 and 51 is to secure cover 49, to oil guard 28. p

9, designates the opening or port in the valve plate which registers with intake and exhaust ports, not shown, in each rotation of' matic compensating gear of any description.

a rs ow Let it also be understood that I know of springs having been used to retain rotary; rvalves against their seats but I do not know of springs ever having-been used above the driving gear for a'wea-r compensator as I have used the same. It will also be readily seen by a careful study oit' the drawings.

Should a valve stem break the valve would.

not drop into the cylinder causingfurther breakage of the 'engme. Therefore this improvement is also susceptible of many minor modifications in form and arrangement of the parts andv I therefore reserve the privilege of resorting .to all such legitimate changes as may be fairly embodied within the spirit and scope of the appended claim.

Having described my improvement what I claim is: The combination in an engine havinga combustion chamber with a rotary valve engaged on a seat provided in the head of said chamber the stem of said valve extending through a bore in the cylinder head. and

through a driving gear set in bearings, a

and a collar attached to the valve stem, an

spring engaged between said driving gear absorbent material arranged in the face of.

said valve and a means of supplying a lubricant to said absorbent material.

In testimony whereof I hereunto afiix my signature in. the presence of two witnesses. FRED ADRIAN TRUESDELL. Witnesses: CLARA HUBLER,

B. K. Du CAMP. 

